Physcomitrium Pyriforme Small 172×320 Medium 343×640 Large 550×1024 Download Tiff Original 1288×2400 | (326.5 KB) Description Spore-case of a Physcomitrium Pyriforme. Keywords leaves, plants, seeds Galleries Mosses and Lichens Source: Asa Gray The Elements of Botany for Beginners and for Schools (New York, Cincinnati, Chicago: American Book Co., 1887) Courtesy the private collection of Roy Winkelman
